114 lines
3.5 KiB
Java
114 lines
3.5 KiB
Java
/*
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* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4089540
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* @summary Verify compatibility with 1.1 externalizable format
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*/
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import java.io.*;
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import java.util.*;
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class Foo implements Externalizable {
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private static final long serialVersionUID = 0xbabel;
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int x;
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int y;
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Object obj;
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public Foo() {
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}
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public Foo(int x, int y, Object obj) {
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this.x = x;
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this.y = y;
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this.obj = obj;
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}
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public void writeExternal(ObjectOutput out) throws IOException {
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out.writeInt(x);
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out.writeInt(y);
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out.writeObject(obj);
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}
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public void readExternal(ObjectInput in)
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throws IOException, ClassNotFoundException
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{
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x = in.readInt();
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y = in.readInt();
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obj = in.readObject();
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}
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public boolean equals(Object other) {
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if (other instanceof Foo) {
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Foo f = (Foo) other;
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return ((x == f.x) && (y == f.y) &&
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((obj != null) ? obj.equals(f.obj) : (f.obj == null)));
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}
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return false;
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}
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}
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public class ExternalizableBlockData {
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public static void main(String[] args) throws Exception {
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byte[] oldExternalizableBytes = getFileBytes(
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new File(System.getProperty("test.src", "."), "old.ser"));
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Foo foo = new Foo(0xbad, 0xbeef, "burrito");
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ByteArrayOutputStream bout = new ByteArrayOutputStream();
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ObjectOutputStream oout = new ObjectOutputStream(bout);
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oout.useProtocolVersion(ObjectStreamConstants.PROTOCOL_VERSION_1);
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oout.writeObject(foo);
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oout.close();
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if (! Arrays.equals(bout.toByteArray(), oldExternalizableBytes)) {
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throw new Error();
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}
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ObjectInputStream oin = new ObjectInputStream(
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new ByteArrayInputStream(oldExternalizableBytes));
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if (! foo.equals(oin.readObject())) {
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throw new Error();
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}
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bout = new ByteArrayOutputStream();
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oout = new ObjectOutputStream(bout);
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oout.writeObject(foo);
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oout.close();
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if (Arrays.equals(bout.toByteArray(), oldExternalizableBytes)) {
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throw new Error();
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}
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}
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static byte[] getFileBytes(File file) throws IOException {
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FileInputStream fin = new FileInputStream(file);
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ByteArrayOutputStream bout = new ByteArrayOutputStream();
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byte[] buf = new byte[256];
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int n;
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while ((n = fin.read(buf)) != -1) {
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bout.write(buf, 0, n);
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}
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fin.close();
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return bout.toByteArray();
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}
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}
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